Gas-valve.



PATENTBD JUNE 11, 1907.

A. L. HAMMARBERG.

GAS VALVB. APPLIOATION PILED BEPT.20.1906.

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PATENTED JUNE 11, 1907.

A. L. VHAMMARBBRG.

GAS VALVE.

APPLIOATION FILED SBPT.Z0.1906.

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ARNDT L. HAMMARBERG, OF YOUNGSTOWN, OHIO.

GAS-VALVE.

Specifieaton of Letters Patent.

Patented June 11, 1907,

Application filed September'20,1906. Serial No; 335.374.

To all whom/ it Tri/ay concrn:

Be it known that I, ARNDT L. HAMMAR- BERG, of Youngstown, in the countyof Mahoning, State of Ohio, have invented a new and useful Gas-Valve, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 is a vertical sectional viewillustrating my invention; Fig'. 2 is a side elevation partially insection; Fig. 3 is a plan view partially in section on the line III-IIIof Fig. 1; Fig. 4 is an enlarged detail view of one of the clamps bymeans of which the water-trough is Secured around the valveseat.

Like symbols of reference indicate like parts wherever they occur.

My invention relates to a water-cooled valve wln'ch, although it isspecially adapted to the purpose of reversing the gas in a Siemensregenerative furnace, it is also applicable to other furnace valves forfurnaces or hot blast stoves where it is desirable to retain a closeeven joint between the valve and its seat and to prevent the valve fromwarping or being otherwise injured by the action of the heat.

Heretofore it has been common to prevent injury to the valves and toinsure a close joint between the valve and its seat by means ofwater-jackets consisting of closed cast-iron chambers or coils ofWTought-iron pipe set in the brick-work and through which water iscaused to circulate, thus producing an internally cooled valve, or bywater-seals which consist of an open trough into which the valve, in theshape of an inverted cup, seats itself, thus producing a water-cooledand water-sealed joint. Water-jackets set in the masonry of the valveare objectonable for the reason that sediment, mud, and other impuritiesin the water are deposited in the jacket which, being thus protectedfrom the cooling action of the water soon loose their coolingproperties, allowing the valves and other parts to warp and burn. Theobjections to a water-sealed valve are that it is open to the gas in thev gas-main and soon becomes clogged with soot and other impurit-iescontained in the The object of my mventon s to provide water-cooling forvalves by means of a trough or Conduit which, while it is at all timesopen for theremovalof sediment, mud, and other impurities deposited bythe water, it is also closed to the gas contained in the gas-mains.

The further object is to so construct the gas-mains as to permit theready removal of the valves when it is desirable to do the same.

My invention therefore. consists in the provisionof externally cooledvalve seats in which the action of the cooling water can at all times bereadily controlled and observed -others skilled in the art maymanufacture and use the same.

In the drawing a represents the gas-fine leading from the gas producerto the furnace; located in this flue in the usual manner and form is thesand-damper b and the valve c between the nozzle and the elbow. To thelower end of the elbows e, e' are attached the water-cooled valve-seatsf which are in the form of annular troughs, the inner face f of thetrough forming the seat of the valve. These troughs have inclinedbottoms or inner sides f which ermit the valve to seat itself easily andevenly When the valve is closed. Directly below the water-troughs f andfastened to them by hinge bolts g are the casings h, h', open at top andbottom and having side outlets k, k' which communicate with the hoods Zleading to the furnace fiue m. These hoods Z may be of the ordinarydesign. The casings h, h' are supported by the water-troughs n, n' whichform the lower water-cooled valve-seats. These watertroughs n, n' aresimilar in design to the upper water-troughs f, f' eXcepting that aportion of the lower water-troughs extends throu h the bridge-wall 0between the furnace ues m and stack flues p, and thus not IOO IIO

only serve as a water-cooled valve-seat but also serve to cool thebridge-wall o which, owing to its shape and position, is subject to acuttng and wearin heat. The watertroughs n, are preferab y Secured tothe casings h by hook bolts g, one of which is shown in Fig. 4. Water iskept circulating in water-trou hs f, f' and n, n by suitable inlet andout et water-pipes whereby the Valveseats are continually kept cool. Inthe positon shown in the` drawings the valve 7 adinits producer gas tothe furnace and the valve r discharges the waste gases to the stack. Byraising the valve 1" to the upper valve seat and droppin the valve r tothe lower valve-seat, the urnace is reversed. The valves may be operatedby hand or by power as is desired.

When it is desired to inspect or to renew the valves 1' or 7", the valvec is first closed and the valves r or r' are raised to the upper valveseat, the bolts g and s are now unhooked and the elbow e is swun open,which allows the valve saucer to be ropped in the open. In this mannerthe valve can be easily or quickly renewed or inspected.

The advantages of my invention as hereinbefore stated, and described,will be appreciated by those skilled in the art.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. In a gas-valve for gas-mains, the combination of a casing, a valveseat, and an eX- ternally open water-trough on the outer face of saidvalve seat, the wall of the valve seat constituting the inner wall ofthe watertrough and forming a portion of the gasman.

2. In a gas-v'alve for gas-mains, the combination of a casng, a valve,an .upper valve seat, a lower valve seat, a water-trough on the outerface of each valve seat, said water- I trough being open exteriorly andclosed to the interior of the casing, the walls of the valve seatsconstituting the inner walls of the water-troughs and forming portionsof the gas-main.

3. In a gas-valve, the combination of a casing, an elbow, a valve-seatSecured to the lower portion of the elbow, and a hinged joint on theelbow whereby the elbow may be swung clear of the casing for the purposeof renewing the valve.

In testimony whereof, I have hereunto set my hand.

ARNDT L. HAMMARBERG. Witnesses:

FRANK H. HoUGHToN, JOHN J. GRANT.

